.l-sider{
    background: #fff;
    width: 200px;
    padding: 10px 20px;
    border-radius: 10px;
}
.l-sider ul li{
    margin: 10px 0;
}

.l-sider ul li a{
   text-decoration: none;
   color: #000;
}

.l-sider ul li a:hover{
    color: #5a88ff;
 }